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| 5/14/2021 | Tri-City Motor Speedway - Auburn, MI Allstar Performance Challenge Race #1 & $1,500 to win PRO STOCK NIGHT DIRTcar Late Models: Allstar Performance Challenge Series Factory Stocks, Hobby Stocks, Sportsmans, A Modifieds, Street Stocks, Dirt Late Models, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Don Leddy (Factory Stocks) | 10th | - | 9th | - |
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| 5/21/2021 | Tri-City Motor Speedway - Auburn, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints Lightning Sprints: Great Lakes Lightning Sprints DIRTcar Late Models, Factory Stocks, Hobby Stocks, Mini Wedge, Mini Outlaws | Results | | Don Leddy (Factory Stocks) | 9th | - | 15th | - |
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| 5/30/2021 | Crystal Motor Speedway - Crystal, MI 410 Sprints - Non-Winged: Great Lakes Traditional Sprints Hobby Stocks, A Modifieds, Street Stocks, Dirt Late Models, Dirt Pro Trucks, Sport Compact | Results | | Don Leddy (Street Stocks) | 7th | - | 13th (DNF) | - |
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| 6/4/2021 | Tri-City Motor Speedway - Auburn, MI FACTORY STOCK NIGHT - $2000 TO WIN DIRTcar Late Models, Factory Stocks, Hobby Stocks, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Don Leddy (Factory Stocks) | 8th | - | 12th | - |
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| 6/18/2021 | Tri-City Motor Speedway - Auburn, MI IMCA Mod Fast Shafts $2000 TO WIN & 4-6 CYL $1000 TO WIN Factory Stocks, Hobby Stocks, Sportsmans, Street Stocks, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Don Leddy (Factory Stocks) | 6th | - | - | 16th |
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| 6/19/2021 | Merritt Speedway - Merritt, MI Lightning Sprints: Great Lakes Lightning Sprints DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Sportsmans, B Modifieds, Mini Wedge, Mini Outlaws | Results | | Don Leddy (Factory Stocks) | 7th | - | - | 10th |
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| 7/2/2021 | Tri-City Motor Speedway - Auburn, MI ALLSTAR PERFORMANCE CHALLENGE SERIES RACES DIRTcar Late Models: Allstar Performance Challenge Series Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Don Leddy (Factory Stocks) | 10th | - | 13th | - |
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| 7/4/2021 | Merritt Speedway - Merritt, MI INDEPENDENCE DAY - DAY 2 | ALLSTAR PERFORMANCE CHALLENGE SERIES RACES DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Sportsmans, B Modifieds, Mini Wedge, Mini Outlaws | Results | | Don Leddy (Factory Stocks) | 8th | - | - | 17th |
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| 7/9/2021 | Tri-City Motor Speedway - Auburn, MI 4-6 CYL & FS NIGHT DIRTcar Late Models, Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Don Leddy (Factory Stocks) | 4th | - | - | 16th |
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| 7/16/2021 | Tri-City Motor Speedway - Auburn, MI PRO STOCK NIGHT - $2500 TO WIN DIRTcar Late Models, Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Don Leddy (Factory Stocks) | 8th | - | - | 17th |
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| 7/23/2021 | Tri-City Motor Speedway - Auburn, MI Challenge Series Races, 4-6 CYL NIGHT - $1500 TO WIN DIRTcar Late Models, Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Don Leddy (Factory Stocks) | 6th | - | - | 18th |
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| 7/30/2021 | Tri-City Motor Speedway - Auburn, MI Pro Stock & Mod Night $1,500 to win! DIRTcar Late Models, Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Don Leddy (Factory Stocks) | 6th | - | - | 20th |
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| 8/27/2021 | Tri-City Motor Speedway - Auburn, MI MIDWEST COMPACT TOUR $1500 TO WIN & IMCA MODS $1000 TO WIN DIRTcar Late Models, Factory Stocks, Hobby Stocks, Sportsmans, IMCA Modified | Results | | Don Leddy (Factory Stocks) | 6th | - | - | 14th |
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| 9/3/2021 | Tri-City Motor Speedway - Auburn, MI ALLSTAR PERFORMANCE CHALLENGE SERIES RACE DIRTcar Late Models: Allstar Performance Challenge Series Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Don Leddy (Factory Stocks) | 8th | - | 6th | - |
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| 9/17/2021 | Tri-City Motor Speedway - Auburn, MI BATTLE BY THE BAY - DAY 1 DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Sportsmans, Mini Wedge, Mini Outlaws, IMCA Modified | Results | | Don Leddy (Factory Stocks) | 5th | - | - | - |
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| 9/18/2021 | Tri-City Motor Speedway - Auburn, MI BATTLE BY THE BAY - DAY 2 DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Hobby Stocks, Sportsmans, B Modifieds, Mini Wedge, Mini Outlaws | Results | | Don Leddy (Factory Stocks) | - | - | 14th | - |
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